And for a disciple thus freed, in whose heart dwells peace, there isnothing to be added to what has been done, and naught more remains forhim to do. Just as a rock of one solid mass remains unshaken by thewind, even so, neither forms, nor sounds, nor odors, nor tastes, norcontacts of any kind, neither the desired, nor the undesired, cancause such an one to waver. Steadfast is his mind, gained isdeliverance.

Buddha (563 - 483 BC)

Source: 'THE ARAHAT, OR HOLY ONE' in The Gospel of Buddha: Compiled from Ancient Records by Paul Carus [1909]